Jamie

Jamie has been crowned, ultimately, the laziest dragon in the lair.
And, bear in mind, he was up against both Pekky and Berry.
But he wins. Because, despite being a Snapper, and Snappers being well known for never sleeping, he still manages to spend approximately all day every day in a small worn hollow directly in the middle of the common area, his chin propped on the edge, watching everyone else go about their business and not moving so much as a toe. They know he can- on one rare occasion, he heaved himself out of his hollow long enough to woo Zaria into laying a clutch with him. He simply won't.
Even Pekky will go on gathering expeditions when told to, and Berry can be forced to. But nothing will persuade Jamie to undertake such an effort. Not kind words, not bribery, not angry shouting- nothing. So Kiki has done what she rarely does, and given up. It's not as though he's particularly in the way; everyone's so used to him being there that they automatically go round him. He doesn't eat much, or make noise or create mess; he simply appears content to exist. People tend to forget he exists.